Observation of a broad -wave resonant state in He
Researchers observed a broad -wave resonant state in He at 1.28(1) MeV using two-body invariant-mass spectroscopy following the knockout reaction of Li at approximately 250 MeV/nucleon.
⚛️ Category
nucl-th
960 papers
Nuclear theory sits at the fascinating intersection of particle physics and the forces that hold our universe together. This field explores how protons and neutrons bind inside atomic nuclei, seeking to understand the fundamental interactions that govern matter at its most dense and energetic levels. While the mathematics involved can be incredibly complex, the core questions are deeply human: how does the universe function at its smallest scales, and what happens when we push matter to its limits?
At Gist.Science, we make these cutting-edge discoveries accessible by processing every new preprint published in this category on arXiv. Our team transforms dense academic manuscripts into clear, plain-language summaries alongside detailed technical overviews, ensuring that both experts and curious readers can grasp the latest breakthroughs without getting lost in the jargon. Below are the latest papers in nuclear theory, distilled and ready for you to explore.
Quantum-classical framework for many-fermion response and structure
This paper introduces a scalable quantum-classical framework that utilizes the Lorentz integral transform and a new Hamiltonian input scheme to compute both the response functions and the full bound-state spectrum of general many-fermion systems.
Non-Hermitian Renormalization Group from a Few-Body Perspective
This paper establishes a rigorous microscopic foundation for non-Hermitian renormalization group (RG) methods by deriving them from the invariance of scattering amplitudes in few-body systems, providing a unified framework that links quantum measurement effects to phenomena in both high-energy and atomic physics, such as nuclear scale anomalies and halo nuclei structures.
Towards a parameter-free analysis of the QCD chiral phase transition and its universal critical behavior
This paper presents a parameter-free method to determine the chiral phase transition temperature and critical exponent in (2+1)-flavor QCD by constructing ratios of an improved, renormalized order parameter, with initial numerical results obtained on lattices using staggered fermions.
NuLattice: Ab initio computations of atomic nuclei on lattices
NuLattice is a Python software package that enables ab initio computations of light atomic nuclei on lattices using methods like Hartree-Fock and coupled cluster theory with pion-less effective field theory interactions, allowing such calculations to be performed on standard laptops.
Quasi-elastic scattering for the nuclear ground state structure: An intriguing case of Si
By combining quasi-elastic scattering measurements with coupled-channels and shell-model calculations, this study reveals that while Si has a distinct oblate ground state, the addition of two neutrons in Si leads to a sudden structural change where the nucleus lacks a well-defined intrinsic shape, suggesting the presence of ground-state shape fluctuations.
Physics of strong electromagnetic fields in relativistic heavy-ion collisions
This paper discusses the various roles of strong electromagnetic fields generated in relativistic heavy-ion collisions, highlighting the need for theoretical and experimental advancements to better understand quark-gluon plasma dynamics and ultraperipheral electromagnetic processes.
Many-body effects on dense matter with hyperons at finite temperature
This paper presents the first extension of the Many-Body Forces (MBF) Model to finite temperature, introducing new hyperon coupling schemes to analyze the thermodynamic properties of beta-equilibrated nuclear matter and the mass-radius relations of compact stars, thereby establishing a new framework for describing proto-neutron stars.
Proton-Size Resolution of the Hyperfine Puzzle in Hydrogen
This paper resolves the hyperfine puzzle in hydrogen, which suggests a variational collapse due to a energy term, by demonstrating that accounting for the proton's finite size yields a stable ground state with a radius indistinguishable from the Bohr radius.
Localization measures of parity adapted U()-spin coherent states applied to the phase space analysis of the -level Lipkin-Meshkov-Glick model
This paper investigates the phase-space properties of parity-adapted U()-spin coherent states to analyze quantum phase transitions in -quDit systems, demonstrating that their Husimi functions, moments, and Wehrl entropy serve as effective localization measures for visualizing critical precursors in the -level Lipkin-Meshkov-Glick model.